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Belmont phot-X II 303 Service Manual

Dental x-ray
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MODEL 303
DENTAL X-RAY
Service Manual
Ver.1
○
R

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Summary of Contents for Belmont phot-X II 303

  • Page 1 MODEL 303 DENTAL X-RAY Service Manual Ver.1 ○...

  • Page 2: Table Of Contents

    Index ． Adjustments required after parts replacement ......... ． Error Code ..........................2.1 Error Code: E.00 ........................4 2.2 Error Code: E.01 ........................4 2.3 Error Code: E.02 ........................5 2.4 Error Code: E.03 ........................5 2.5 Error Code: E.05 ........................6 2.6 Error Code: E.06 ........................6 2.7 Error Code: E.07 ........................7 2.8 Error Code: E.08 ........................8 2.9 Error Code: E.09 ........................8...
  • Page 3 ． Exposure time ....................... 4.1 Assignable exposure time......................17 4.2 Exposure time in the automatic setting mode................17 4.2.1 Film number and exposure time in film mode（for short cone/4 mA/60 kV） ....17 4.2.2 Film number and exposure time in film mode（for long cone/4 mA/60 kV） ....18 4.2.3 Film number and exposure time （for short cone/7 mA/60 kV）...

  • Page 4: Adjustments Required After Parts Replacement

    １． Adjustment required after parts are replaced Following two kind of adjustments are necessary if head or PC board is replaced. Replaced part Timer PC Power PC Filter PC Head Adjustment board board board Change the CP value as indicated on the head yoke.

  • Page 5: Error Code: E.02

    2.3 Error Code: E.02 Meaning The exposure switch was pressed when the line voltage was less than 90% of the rated voltage. To release Release the exposure switch to restore the original state. Verification Measure the voltage between L and N of the power supply terminal block. Solution Increase the line voltage using a step-up transformer if the supply voltage is less than 90% of the rated voltage.

  • Page 6: Error Code: E.05

    ⑤Check that the calculation result of b - (a x 0.03) falls within ±0.05 V. Solution (See photo 1) Adjust VR01 on the PC board to make b = (a x 0.03). Possible cause 2 The memory is out of order. Verification Check C.XX setting at overview mode.

  • Page 7: Error Code: E.07

    ①After exposure, do not release the exposure switch. Press the mA button twice while holding down the exposure switch. ②Keep holding down the exposure switch and check that the T5 light is on and the indication of the seven-segment LED. Solution If seven-segment LED displays not less than 5.1 mA (when 4 mA is set) or not less than 8.8 mA (when 7 mA is set), decrease the setting value for h.XX.

  • Page 8: Error Code: E.08

    Replace the arm in question (horizontal or balance arm) if any failure is found. Possible cause 3 If seven segment LED displays not more than 1 mA, the power PC board or the head is out of order. Solution 1. Both the power PC board and x-ray head should be changed, if the manufactured date is Oct. 2005 or earlier.

  • Page 9: Error Code: E.10

    2.10 Error Code: E.10 Meaning The exposure switch is already on, when the power switch is turned on. To release Turn off the main power switch and confirm all displays go off. Then turn on again. Verification Power on after disconnecting CN2 on the timer PC board and check whether the same symptom (E.10) appears.

  • Page 10: Error Code: E.15

    2.14 Error Code: E.15 Meaning Tube voltage immediately before termination of exposure was higher than 70 kV (when 60 kV is set) or 80 kV (when 70 kV is set). To release Turn off the main power switch and confirm all displays go off. Then turn on again. Verification Make an exposure for 0.05 seconds and check the tube voltage.

  • Page 11: Error Code: E.17

    2.16 Error Code: E.17 Meaning Tube voltage during exposure rose to 80 kV or above. To release Turn off the main power switch and confirm all displays go off. Then turn on again. Solution If the same symptom appears, it is more likely that the power PC board is the cause. In this case, replace the PC board.

  • Page 12: Error Code: E.22

    Replace the arm in question (horizontal or balance arm) if any failure is found. Possible cause 3 The head is out of order. Verification Disconnect the head connector (10P) from the arm cable and check continuity between #2 and #6 terminals in the head connector.

  • Page 13: Setting Mode

    The communication cable (power line) is broken. * If the fuse blows again when fuse is replaced, no break exists in the communication cable. Verification Check continuity of the #1 and #4 wires of the communication cable. Solution Replace the communication cable if any failure is found. Possible cause 2 The power supply circuit on the timer PC board is out of order.

  • Page 14: Tube Current Adjustment Value

    the film type you want and the press the △ or ▽ button to display the film number you want on the seven-segment LED. If you want to change the film number of another film type, select the film type using the film type selection button and then follow the same process as above.

  • Page 15: Buzzer

    the same process as above to store a new tube voltage adjustment value for 70 kV. ③When the change of tube voltage adjustment value is completed, the standard digital value for tube voltage is automatically changed in conjunction with the adjustment value stored. 3.4 Setting the alarm (1) To enter this mode Hold down the T1 and T2 buttons for approximately three seconds.

  • Page 16: Lock Mode

    within the prescribed range, XX specified in (2)- ③ is stored as the preheating power setting value for 60 kV/4 mA, and you will be directed to the adjustment of 60 kV/7 mA. If it falls outside the range, a new “h” value is displayed, and exposure at 60 kV/4 mA shall be conducted again.

  • Page 17: Exposure Time

    digital mode are off. ②The seven-segment LED displays “PX.X”. X.X represents the version number of the program. (3) Operation and display ①Each time you press the △ button, the display on the seven-segment LED will change in the order as below and allow you to check the settings.

  • Page 18: Film Number And Exposure Time In Film Mode（For Long Cone/4 Ma/60 Kv

    4.2.2 Film number and exposure time in film mode（for long cone/4 mA/60 kV） Children Adult Large Adult Patient Teeth F.00 0.05 0.06 0.08 0.08 0.13 0.08 0.10 0.13 0.16 0.20 0.10 0.13 0.16 0.20 0.25 F.01 0.06 0.08 0.10 0.10 0.16 0.10 0.13 0.16 0.20 0.25 0.13 0.16 0.20 0.25 0.32 F.02 0.08 0.10 0.13 0.13 0.20 0.13 0.16 0.20 0.25 0.32 0.16 0.20 0.25 0.32 0.40 F.03...
  • Page 19 4.2.4 Film number and exposure time in film mode（for long cone/7 mA/60 kV） Children Adult Large Adult Patient Teeth F.00 0.03 0.04 0.04 0.05 0.08 0.05 0.06 0.08 0.08 0.13 0.06 0.08 0.10 0.10 0.16 F.01 0.04 0.05 0.06 0.06 0.10 0.06 0.08 0.10 0.10 0.16 0.08 0.10 0.13 0.13 0.20 F.02 0.05 0.06 0.06 0.08 0.10 0.08 0.10 0.10 0.13 0.20 0.10 0.13 0.13 0.16 0.25 F.03...
  • Page 20 4.2.6 Film number and exposure time in film mode（for long cone/4 mA/70 kV） Patient Children Adult Large Adult Teeth F.00 0.04 0.05 0.06 0.06 0.10 0.06 0.08 0.10 0.10 0.16 0.08 0.10 0.13 0.13 0.20 F.01 0.05 0.06 0.08 0.08 0.13 0.08 0.10...

  • Page 21: Sensor Sensitivity Number And Exposure Time (For Short Cone/4Ma/60Kv)

    4.2.8 Film number and exposure time in film mode（for long cone/7 mA/70 kV） Patient Children Adult Large Adult Teeth F.00 0.02 0.03 0.03 0.04 0.05 0.04 0.04 0.05 0.06 0.08 0.05 0.05 0.06 0.08 0.10 F.01 0.03 0.03 0.04 0.05 0.06 0.05 0.06 0.06 0.08 0.10 0.06 0.06 0.08 0.10 0.13 F.02 0.03 0.04 0.05 0.06 0.08 0.06 0.06 0.08 0.10 0.13 0.08 0.08 0.10 0.13 0.16 F.03...

  • Page 22: Sensor Sensitivity Number And Exposure Time (For Long Cone/7Ma/60Kv)

    4.2.10 Sensor sensitivity number and exposure time in digital mode（for long cone/4 mA/60 kV） Patient Children Adult Large Adult Teeth d.00 0.03 0.03 0.04 0.04 0.06 0.04 0.05 0.06 0.08 0.10 0.06 0.06 0.08 0.10 0.13 d.01 0.03 0.04 0.05 0.06 0.08 0.06 0.06 0.08 0.10 0.13 0.08 0.08 0.10 0.13 0.16 d.02 0.04 0.05 0.06 0.06 0.10 0.06 0.08 0.10 0.10 0.16 0.08 0.10 0.13 0.13 0.20 d.03...
  • Page 23 4.2.12 Sensor sensitivity number and exposure time in digital mode（for long cone/7 mA/60 kV） Patient Children Adult Large Adult Teeth d.00 0.02 0.02 0.02 0.03 0.04 0.03 0.03 0.04 0.04 0.06 0.03 0.04 0.05 0.05 0.08 d.01 0.02 0.02 0.03 0.03 0.05 0.03...
  • Page 24 4.2.14 Sensor sensitivity number and exposure time in digital mode（for long cone/4 mA/70 kV） Patient Children Adult Large Adult Teeth d.00 0.02 0.02 0.03 0.03 0.05 0.03 0.04 0.05 0.05 0.08 0.04 0.05 0.06 0.06 0.10 d.01 0.02 0.03 0.04 0.04 0.06 0.04...
  • Page 25 4.2.16 Sensor sensitivity number and exposure time in digital mode（for long cone/7 mA/70 kV） Patient Children Adult Large Adult Teeth d.00 0.01 0.01 0.02 0.02 0.03 0.02 0.02 0.03 0.03 0.04 0.02 0.03 0.03 0.04 0.06 d.01 0.01 0.02 0.02 0.02 0.03 0.02 0.03 0.03 0.04 0.06 0.03 0.03 0.04 0.05 0.08 d.02 0.02 0.02 0.02 0.03 0.04 0.03 0.03 0.04 0.05 0.06 0.04 0.04 0.05 0.06 0.08 d.03...

  • Page 26: Parts Replacement

    5． Parts replacement 5.1 Head 1. Turn off the main power switch on the front panel of PHOT-X 2. Close the balance arm and secure it with a strong string. The balance arm is spring loaded and it can pop out and cause injury when the Holding x-ray head is removed.

  • Page 27: Power Pc Board

    3. Press the kV switch, and the LED will show 70 kV. Press the exposure time adjusting switches (πorθ) and adjust the CP number so that it is the same value as 70kV, which is written on the label inside the head yoke. (Fig.
  • Page 28 Adjustment after exchanging the power PC board (mA adjustment) 1. Turn on the main switch at the circuit breaker panel and the main switch on the x-ray front panel. 2. Hold down the tooth selection switches together (T1, T4, and T5) until “h.xx” appears in the exposure time display window.

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